Impeqved bolt-making machine



@niet tent' geen@een .recemment No.' 714,834, dated neem/25,1868:

IMPnor-En BoLrfMA'K-ING MACHINE.,

dige A.Sthemle trotter tt in tigen' tttti'ittnt mit .mating- `ritiritlgt from,4

Be it known that we, WILLIAMKLEMM and Renner Drrrnron, both ofPitt-sbrg,in the oonty of Allegheny, and State of Pennsylvania, have invented anew and useful Machine for Heading Bolts end Rivets; end we do .hereleydeclare that the following isafulhclearpnnd exact descriptionot'v'theeonstructitm and operation ofthe same, reference beingihad to .theannexed drawings, making :t'pnrt of"` this specification, in Which-Figure'l-is a perspective view of our machine. l

A is the bed-plate of' the machine; B are the legs or lsupports forthehed-plate A; C is the stationary" gripin'gldic; D is themovablegripingdie; Eis the movable head whiclrcarries the header W; 'Fisraneccentric yoke enclosing the eccentric Gr;- G is an eccentric onthe shaft M, working the strap E; H is :t key working in theeccentric-yoke F; I is a. k-ey working in the ccccntricstra-p LgfK isan'eccentric on the shaft MV;-L`is an eccentric-strap on the eccentric K;M is the shaft carrying the eccentrics-Kencl G, end pnlleyRg' N is oshn't, which carries the levers 11,02, and f,' .O is a.trcadle'vibratingon the pin P ;P is' the pin which supports the trcndlefO Q is a coiinterbrlnucc-weight attached to the treaflle O; R is thedrivin'rg-"pulley on the shaft M; S is a. link vibrating on the centreat U; T is ulink connected with S, and moving the dic D -W is theheading-tool in the sliding'hcad E; X is the half circular groove in Dto hold the holt-blanks gia is a link connecting the key with the leverI1 is a leveron theshnft N, supporting link ,a and key H; oA is a linkcnnectingthe key Iwith thclevcr d; d isii'lever onthc shaft N,supporting the link c and key I; e iso link connecting the treadle Owith the leverf; fis c. lever Yon the'shaf't N, connected with treadle Oby c; g is an opening in the bed-plate A, throgh which the blonk's arepassed `into 4the griping-dies C and D.

To -cnabl'e others'skilledin the art tomakennd use our invention, wewill proceed to describe-its `construc tion and operation. i I

. Thelalnnks for 'nienufacturc into bolts or rivets, as desired, (havingheen cut to the V'desired len gths,) are passed through'the hole g, andbetween the'griping-.dies C and D, until the end connes in contact withthe heading-` die W.4 The foot is then placed upon the nl eadle O, thetreadle depressed until Vthe keys H vand I come in contact with the`feces ofthe ecccntric's' G and K, (as shown irthc accompanyingdrawing.) The shaftMnnd l eccentrics G and'K having been putinmotionbymenne-of a. belt upon the pulley R, the eccentrics G eind-H come incontact with the'keys H and I, 'ivhichforces forward theeccentric-straps Fand L. i The eccentric, G,

being i set on thc'shaft M, forward ofthe'eccentric, K,I will cause thestrapY F to mo've,in-advanceof the strap The moving forward of the strap-F causes the togglejoint, cornposed of `theglinks S ond4 T, tostraighten "out, and this toggle vibratingupon a'statienary point at Y,and being connected with Vthe griping-die Dat the point V, the llic'Dwill be brouvht forward'ntl it gripes `betneen itself nud the die C the`bolt-blank, which 4was prcviouslyinserted ythrough the opening g. Theeccentric. K, then comes forward, and. gives a. forward.

motion to the Slidell.`| and heading-dic W. This brings the headingsdiein `contact with the bolt-blank, and

. compresses-the metal of 'the letter into thiecnvity in the die, madein the form of the desired head. "The heading cavity maybe in eitherthc'headingdie, the griping-glies, or in both. After the bolt is thusformed, the foot is removedffrom the trcadlc O, the counter-weightycauses the'trendle to-rise, und through the connectionsv e'fN -a Ii c d,the-keys Hand Ihre lifted from'ther position, above the line of. motionof the eccentrics G and K, and the shaft and eccentrics can thencontinuo Ato revolve without nnoving forward thestrnps F- and L, untilthe bolt or rivet just madelms been removed, and :mother blank insertedready to be headed, and theV trcadleO once more depressed. When thestrap F has been brought forward by theieccentric, G,`uutil thegriping-dies C and D are pressing tightly upon' the blarnk,rthetoggle-joint, composed of the links S and' T, assumes a. straight4line,.a.nd the vpressure ofthe griping-dies then? cernes directly uponthebcd ofthe machine-at 1U, Without pressing upon any of the Workingparts of the machine. The working parts are thus kept in better order,and vwith less weer' than when the eccentric operates directlyl upon thegripingfdics, as is usually the case.

What We claim ns our iiivention,. and desire tose'cure hylLettersPatent'of the UnitedStates, is- The keys H and I or their equivalent,arranged in relation to the other ports of the machine, and operatedsubstantially as described, and for the purpose'set forth. v f WM.KLEMM,

ROBERT DIrTRIoH.

Witnesses:

' JOHN B;:EARL, ,CHARLES lDnrnnr.

